I have a 01' KX-125 and I just rebuilt the top end this weekend. I bought a weisco piston for my bike. however, after I got done I noticed that there are two small holes on the back side of the old piston (exhaust holes?) and there werent any on the new weisco piston that I put in. I was just wondering what the holes were for and if I have to take the new piston out and drill them or if it is fine without the small holes.
Thanks alot,
Rick
Thanks alot,
Rick